Electric Water Heaters | Gas Water Heaters | Propane Water Heaters | Tankless Water Heaters Please click on a category to view products. Free Standard Shipping on Water Heaters shipped within the Mainland Continental United States Home » Commercial Water Heaters, Storage Tanks & Accessories » Propane Water Heater » All ProductsView all products in all categories. RHEEM G: Propane (LP), Water Heater [More] ... [Less] RHEEM GHE: Propane (LP) Direct-Vent Sealed-Combustion [More] ... [Less]